Concrete & Rebar Estimator for Excel
Estimate preliminary concrete volumes and straight-bar reinforcement weights using editable, inspectable spreadsheet formulas.
Download free Excel betaSee how it worksNo account or payment required. Beta for learning and early-stage quantity checks.
Concrete volume
Enter dimensions and quantities for rectangular slabs, foundations, and beams.
Rebar weight
Estimate straight-bar mass from diameter, cut length, and number of bars.
Editable workbook
Review formulas, replace sample inputs, and adapt your preliminary takeoff workflow.
How to use the beta
- Download and open the workbook in a compatible spreadsheet app.
- Check the sample entries, units, and formulas.
- Replace sample inputs with your own quantities.
- Independently verify all outputs before use.
Scope: rectangular concrete quantities and straight rebar only. No bends, hooks, laps, wastage, drawing takeoff, structural design, or code compliance. Not certified; do not rely on it for safety-critical decisions or final procurement.
Free estimating references
Concrete volume formula
Metric worked examples and common unit mistakes.
Rebar weight formula
How diameter and straight-bar length affect theoretical mass.
Quantity takeoff checklist
Practical checks before trusting a preliminary estimate.
Frequently asked questions
Is this a structural design tool?
No. It calculates preliminary quantities, not member capacity or reinforcement requirements.
Can I use it for construction ordering?
Not without independent verification and project-specific allowances. The beta omits several material and detailing factors.
Is a paid version available?
No. This is a free evaluation beta; checkout is not active.